This means that for the first time doctors may be able to tell if an infected（被感染的）person who feels well is ________ becoming ill, so that they can try to do something to prevent this.
| A．in case of | B．in danger of | C．in terms of | D．in charge of |
—I don’t suppose the police know who did it.
—Well, surprisingly they do.A man has been arrested and _______ now.
| A．has been questioned |
| B．is being questioned |
| C．is questioning |
| D．has questioned |
—Can I help you,sir?
—___________.
| A．Yes,you can help me | B．No,I don’t need any help |
| C．Of course,if you like | D．No,thanks,I’m being served |
—Can I look at the menu for a few more minutes before I decide?
—Of course. ____________,sir.
| A．Make yourself at home | B．Enjoying yourself |
| C．It doesn’t matter | D．Take your time |
—You are always staying at home watching TV.Why not come on a holiday with us on such a lovely day?
—___________.
| A．Have a good day |
| B．How exciting |
| C．It would be nice to have some rest |
| D．Yes,if you’d like me to |
—Do you have trouble finding the house?
—___________.
| A．No,completely none | B．Yes,completely none |
| C．No,hardly one | D．Yes,I’ve got one |